Thanks,
This should give me somewhere to start. I cant wait to dig in and see what can
be done.
Steve> Date: Fri, 25 Jan 2008 17:31:34 +0100> From: [EMAIL PROTECTED]> To:
flightgear-devel@lists.sourceforge.net> Subject: Re: [Flightgear-devel] Replace
fg visualization with streaming video> > -----BEGIN PGP SIGNED MESSAGE----->
Hash: SHA1> > Curtis Olson wrote:> | On Jan 25, 2008 8:31 AM, STEPHEN THISTLE
wrote:> |> | I am relatively new to flight gear and am interested in using it
as> | a visualization tool for UAV's. I would like to replace the fg> | scenery
with images captured from a camera onboard an aircraft. I> | was wondering if
there is any way to import images into flightgear> | on the fly. The basic goal
would be to show live video where> | available and fall over to flight gear
visuals when the feed is> | lost(using a custom view from the camera
perspective) .I am not sure> | if this is currently possible but I would like
to explore the idea> | either using external tools or contributing to fg. Also
a link to> | some documentation on the fg architecture especially how it
handles> | the visualizations would be greatly appreciated.> |> |> | I don't
think there's any current way to do this. However, I think what> | is needed is
to link in some video capture library to do frame grabs> | from your video
camera as quickly as possible. Then do whatever bit> | fiddling is needed to
scale/convert the raster image to an opengl> | texture. Then draw this texture
on a quad that is aligned correctly> | relative to the camera. It might be
possible to get fancy and alpha> | blend the edges a bit.> |> Getting live
video onto a texture is pretty standard stuff in the OpenSceneGraph> community,
I believe. You might want to ask on the osg-users mailing list.> > | Given an
image and the location and orientation of the camera, it would> | be possible
to locate world coordinates across a grid on that image.> | That would allow a
quick/crude orthorectification where the image could> | be rubber sheeted onto
the terrain. This would take some offline> | processing, but you could end up
building up a near real time 3d view of> | the world than could then be viewed
from a variety of perspectives. The> | offline tools could update the master
images based on resolution or> | currency ... that's probably a phd project for
someone, but many of the> | pieces are already in place and the results could
be extremely nice and> | extremely useful (think managing the effort to fight a
dynamic forest> | fire, or other emergency/disaster management, traffic
monitoring,> | construction sites, city/county management & planning, etc.) I
could> | even imagine some distrubuted use of this so that if you have several>
| uav's out flying over an area, they could send their imagery back to a> |
central location to update a master database ... then the individual> |
operators could see near real time 3d views of places that another uav> | has
already overflown.> |> If you want to see a view of the terrain updated by the
UAV's camera, then nothing> needs to be done offline. Assuming you have
accurate position and orientation data from> the UAV, you can project its
imagery directly on the terrain as a projected texture.> > | If we started
building up more functionality in this area, there are a> | lot of different
directions we could take it, all of which could be> | extremely cool.> >
Yup...> Tim> -----BEGIN PGP SIGNATURE-----> Version: GnuPG v1.4.7 (GNU/Linux)>
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org> >
iD8DBQFHmg7meDhWHdXrDRURAtvhAKC5V5HJMAXu1k7ogoWEgejOCYpXLACgnb9V>
NeqGLibyJOk6Y+g161UThvk=> =KsvA> -----END PGP SIGNATURE-----> >
-------------------------------------------------------------------------> This
SF.net email is sponsored by: Microsoft> Defy all challenges. Microsoft(R)
Visual Studio 2008.> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/>
_______________________________________________> Flightgear-devel mailing list>
Flightgear-devel@lists.sourceforge.net>
https://lists.sourceforge.net/lists/listinfo/flightgear-devel
_________________________________________________________________
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Flightgear-devel mailing list
Flightgear-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/flightgear-devel
